基于STEP的面向对象工艺计划信息模型  

AN OBJECT ORIENTED STEP BASED PROCESS PLAN MODEL

作　　者：段广洪[1] 吴瑞荣[1] 王先逵[1] 张玉云[1] 

机构地区：[1]清华大学精仪系

出　　处：《计算机集成制造系统-CIMS》1997年第4期20-23,共4页

基　　金：国家863/CIMS主题青年基金

摘　　要：工艺计划信息的表达方式直接影响ＣＡＰＰ系统与ＣＩＭ环境下其它分系统之间的信息交换。本文在分析工艺计划信息模型研究现状的基础上，从应用需求出发，提出了将实用性与通用性相结合的工艺计划信息建模策略。基于该策略，提出了面向对象的分层工艺计划信息表达方式，并建立了相应的ＥＸＰＲＥＳＳ模型。最后介绍了ＥＸＰＲＥＳＳ模型向底层实现机制转换的两种方式。Process plan representation is essential for the data exchange between CAPP system and other systems in CIM environment. This paper first reviews the state of art of the process plan model research. Then a process plan modeling strategy is proposed, which aims to meet real application requirements and integrate the practicality and generalization of the process plan description. Based on the strategy, an object oriented and hierarchical representation of process plan is proposed and its EXPRESS model is presented. Finally, the translation from EXPRESS model of process plan to STEP file and C++ form is introduced.

关 键 词：CAPP 工艺计划 信息模型 面向对象 STEP 

分 类 号：TH162[机械工程—机械制造及自动化]